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دیتاشیت - Analog Devices - (ADuM1240 - ADuM1246) Dual-Channel Digital Isolators

شماره قطعه ADuM1240
شرح مفصل (ADuM1240 - ADuM1246) Dual-Channel Digital Isolators
تولید کننده Analog Devices 
آرم Analog Devices 


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ADuM1240 شرح
Data Sheet
Micropower, Dual-Channel Digital Isolators
ADuM1240/ADuM1241/ADuM1245/ADuM1246
FEATURES
FUNCTIONAL BLOCK DIAGRAM
Ultralow power operation
3.3 V operation
16 µA per channel maximum quiescent current, refresh
enabled
0.3 µA per channel typical quiescent current, refresh
disabled
148 µA/Mbps per channel typical dynamic current
2.5 V operation
8 µA per channel maximum quiescent current, refresh
enabled
0.1 µA per channel typical quiescent current, refresh
disabled
116 µA/Mbps per channel typical dynamic current
Small, 20-lead SSOP package
Bidirectional communication
Up to 2 Mbps data rate (NRZ)
High temperature operation: 125°C
High common-mode transient immunity: >25 kV/μs
Safety and Regulatory Approvals
UL 1577 component recognition program (pending)
3750 V rms for 1 minute per UL 1577
CSA Component Acceptance Notice 5A (pending)
VDE certificate of conformity (pending)
DIN V VDE V 0884-10 (VDE V 0884-10): 2006-12
VIORM = 849 V peak
APPLICATIONS
General-purpose, low power, multichannel isolation
1 MHz low power SPI
4 mA to 20 mA loop process control
GENERAL DESCRIPTION
The ADuM1240/ADuM1241/ADuM1245/ADuM12461 are
micropower, dual-channel digital isolators based on the Analog
Devices, Inc., iCoupler® technology. Combining high speed CMOS
and monolithic air core transformer technologies, these isolation
components provide outstanding performance characteristics supe-
rior to alternatives, such as optocoupler devices, yet consume
extremely low power.
Packaged in a 20-lead SSOP, this series of dual, 3.75 kV rms
digital isolation devices operate with supplies as low as 2.25 V
and typically consume a minimal current of less than 6 µA per
channel at data rates below 20 kbps, a fraction of the power of
comparable isolators at comparable data rates (up to 2 Mbps).
In addition, all models provide low pulse width distortion (<8 ns)
VDD1 1
GND1 2
NIC 3
ADuM124x
20 VDD2
19 GND2
18 NIC
NIC 4
17 NIC
VIA/VOA 5
ENCODE
DECODE
16 VOA/VIA
VIB 6
EN1 7
NIC 8
NIC 9
GND1 10
ENCODE
DECODE
15 VOB
14 EN2
13 NIC
12 NIC
11 GND2
Figure 1.
and an input glitch filter for extraneous noise disturbance protec-
tion. All models operate with an independent supply voltage on
either side (between 2.25 V and 3.6 V), providing compatibility
with lower voltage systems and enabling voltage level translation
functionality across the isolation barrier. In the absence of input
power, the products default to a predetermined output logic state:
the ADuM1240 and ADuM1241 default to high output, and the
ADuM1245 and ADuM1246 default to low output.
PRODUCT HIGHLIGHTS
1. Microwatt Power. These 3.75 kV digital isolators consume
less than 15 μW per channel quiescent and 950 μW per
channel at 2 Mbps.
2. Low Supply Operation. Supports power supply voltages down
to 2.25 V.
3. iCoupler Technology. Patented Analog Devices technology
combining high speed CMOS and monolithic air core
transformer technologies.
1000
100
10
ENx = 0
1 ENx = 1
0.1
0.1
1
10
100
1000
10000
DATA RATE (kbps)
Figure 2. Typical Total Supply Current (IDD1 + IDD2) per Channel (VDDx = 3.3 V)
1 Protected by U.S. Patents 5,952,849, 6,873,065, 7,075,329, 6,262,600. Other patents pending.
Rev. 0
Document Feedback
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityisassumedbyAnalogDevices for itsuse,nor foranyinfringementsofpatentsor other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
©2013 Analog Devices, Inc. All rights reserved.
Technical Support
www.analog.com
Free Datasheet http://www.datasheet4u.com/

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ADuM1245 (ADuM1240 - ADuM1246) Dual-Channel Digital Isolators Analog Devices
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ADuM1246 (ADuM1240 - ADuM1246) Dual-Channel Digital Isolators Analog Devices
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